. >>> now the back lack from the royal prank a phone call made from djs where kate middleton was staying. >> and the nurse who took her life. we have a report the djs could face criminal investigation. >> reporter: it was a bad joke that took a tragic turn. and now the two australian djs at the center of that infamous phoney phone call. >> hello, there. could i please speak to kate mygranddaughter. >> reporter: may have to face questioning from australian police. did they break the law by recording and broadcasting what was a private conversation when they got through to the london hospital room where kate middleton was being treated for severe morning sickness? >> i want to see how her tummy bug is going. >> she is sleeping at moment. >> reporter: the station boss has come to their defense. >> we are confidence we have not done anything illegal call was found dead in an apparent suicide, the global backlash goes on. threats and calls for their arrests has pushed djs mel greg and michael christian into hiding. twitter and facebook pages dark, station executives tell abc news the pair is